ommatidium

ommatidium — noun

1. a tiny sight unit that forms part of an insect's compound eye.

1.名詞C2
釋義

a tiny sight unit that forms part of an insect's compound eye.

例句

In the lab, Lea counted each ommatidium in the fly's damaged eye.

countable noun: each ommatidium

Baraka shaded one ommatidium darker on the bee diagram for emphasis.

one ommatidium on a bee diagram

同義詞
  • eye unit

    a plain explanatory phrase, but less technical than ommatidium

  • facet

    sometimes used loosely, though it can refer only to the outer surface

文法句型

an ommatidium

each ommatidium

many ommatidia

用法筆記

Mostly used in biology. The plural is usually ommatidia, and the word names one unit inside a compound eye rather than the whole eye.

常見錯誤

❌The fly cleaned its ommatidium.
✅The fly cleaned its compound eye.
💡ommatidium means one small unit, not the whole eye.
❌The bee has thousands of ommatidium.
✅The bee has thousands of ommatidia.
💡the usual plural in scientific English is ommatidia.